Who is the only heavyweight boxing champion to retire with an undefeated record? Answer

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Who is the only heavyweight boxing champion to retire with an undefeated record? Answer

The only heavyweight boxing champion to retire with an undefeated professional record is Rocky Marciano.

Marciano, who reigned as the World Heavyweight Champion from 1952 to 1956, finished his career with a perfect record of 49 wins and 0 losses, with 43 of those victories coming by knockout. His accomplishment remains a unique historical benchmark in the sport’s highest division, as no other boxer who held a universally recognized world heavyweight title has managed to hang up their gloves without ever suffering a defeat.

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